Nope. Science as research and experiment require highly trained people and generally expensove equipment. The people with the ability generally have no reason to conduct work in isolation - publishing is good for there carreer, and probably couldn't affors to anyway.
Making drugs or networks isnt research or science.
Historically, though, some mathematicians did like to hide their results - Newton, Pythagoreans, and the soln to the cubic. Alchemists, precursors to modern chemists, but not scientists, supposedly did lots of work in secret.